Perforated paper.



l A. KLEI'NFELDT.

lPatented Mar. 5, 190],

PERFORATED PAPER.

(Application filed Apr. 6, 1900.)

Jlo Modal.)

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Unire ARTHUR KLEINFELDT,

OFINENV YORK, N. Y.

PERFORATED PAPER.

SPECIFICATION forming part of Letters Patent No. 669,203, dated March 5, 1901.

Application filed April 6, 1900.

To all whom, t may concern:

Beit known that 1, ARTHUR KLEINFELDT, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Perforated Paper, dac., of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof.

This invention relates to the perforation p (including partial cutting, scoring, dac.) of

sheets of paper or other material to facilitate the tearing of the sheet along a predetermined line, whether for the purpose of opening a package, envelop, wrapper, or other inclosure or for the purpose of .removing a sheet or a portion of a sheet, as a coupon or check or sales-slip, or for any other analogous purpose. Perforation for such purposes has generally consisted heretofore of a series of small round holes or of indentations or partial rup' tures or of scores or cuts arranged in the line of the intended tearing or obliquely across such line. With great care it is generally possible to tear along the intended line of such perforations, but without such care the actual line of tearing frequently runs off from the intended line because the tear or rupture is not always directed from one perforation to the next.

It is the object of the present invent-ion to so form the perfor-ations (by which term it is intended to include not only actual removal of portions of the sheet of paper or other material, but indentations, partial ru ptures, cuts, scores, dto.) that the tear or rupture of the material between successive perforations shall be directed Without fail from one into the next. In accordance with the invention, therefore, the line of perforations is made up of a series of cuts or scores, each cut or score having one portion extended across the general line of the series, which is the intended line of tear, and another portion extended from the first portion toward the next cut or score. Furthermore, an euvelop to which the invention is applied may be provid-ed with another feature of improvement to facilitate the opening of the envelop.

The invention will be more fully described hereinafter with reference to the accompanying drawings, in Which- Serial No. 11,813. (No model.)

Figure 1 is a View of an envelop formed with a series of cut-s or scores following the line of one of the liaps. Fig. 2 is a detail section on the plane indicated by the line 2 2 of Fig. l. Fig. 3 is a detail view of a portion of the perforated flap shown in Fig. 1 with the tongue extended. Fig It is a View of an envelop formed with a double series of cuts or scores near one edge'. Fig. 5 is a View of a portion of a sheet of paper or material formed with two single series of cuts or scores, as in a check-book; and Fig. 6 is a View of a portion of a sheet of paper with a single series of cuts or scores arranged to permit the paper to tear in either direction.

As represented in the drawings, the sheet of paper or other material to be torn is form ed with a series of unbroken angular cuts or scores along the intended line of tear, as from A to B in the several figures. Each cut or score,as represented in the drawings, consists of one portion, as a, which is extended across the general line'of the series, preferably in an oblique direct-ion, and a second portion b, either straight or curved, extended from the rst portion toward the next out or score, preferably in the general line of the series, but directed inward somewhat toward the side of the first portion of the next cut or score. The portions ct and b being continuous form together a single unbroken anguiar cut or score. When the paper-or other material is torn, starting at A, the second portion of each cut or score will direct the tear or rupture from the first portion of the same cut or score to the rst portion of the next out or score, so that it is impossible for the line of tear to depart from the general line of the series of cuts or scores. As represented at C in Figs. l, 2, and 3, a tab or tongue may be formed between the ends of the two series of cuts or scores for convenience in starting the tear. This tab or tongue C is defined by paralled incisions c, running to the edge of the iiap of the envelop, and is extended beyond the line of the flap when the envelop-blank is cut, as clearly shown in Fig. 3. It may be scored, as at c', and is then folded with a double fold, as shown at c2 in Figs. 1 and 2, so that its end coincides with the line of the flap. When the envelop is manufactured, the tab or tongue C is glued IOO down with the flap of which it forms a part, its end being covered by the end of the other flap, which is leftunsealed until the envelop is used. The double fold c2 forms a tab to be grasped between the thumb and nger for tearing the envelop open, and as it bends readily in either directionV it does not afford a hold for the accidental opening of the envelop by engagement with another envelop or card.

It is obvious that the portion a of each out or score might have at each end a second portion, turned one in one direction and the other in the other direction, as shown at b and b in Fig. 6. In this modification, as in the form shown in Figs. 1, 3, 4, and 5, all portions of the out or score are-continuous, forming an unbroken angular cut or score diiering from the out or score shown in Figs. 1, 3, 4, and 5 only in having two angular portions instead of one. This arrangement permits the paper to be torn in either direction.

It will be understood that the form of cut shown in Fig. 6 may be used in place of the form shown in the other iigures of the drawings in connection with the tongue or tab and is particularly useful where it is found desirable to use a tearing-Hap having two or more angles at either of which the tearing maybe started. It is also particularly adapted for use in the check-book shown in Fig. 5, as it enables the cheek to be torn either 'up or down.

It will be observed upon examination of Fig. l that the envelop or wrapper has a substantially triangular fiap, with a series of cu ts or scores substantially parallel with each side of the flap, the two series diverging from a common point. This arrangement not only permits the envelop or wrapper to be opened readily and quickly to the full Width of the flap, so that the contents can be Withdrawn without difliculty, but it leaves the envelop or Wrapper otherwise intact, there being no strip to be torn out and to be dropped upon the floor or elsewhere.

I claim as my inventionl. A sheet of paper or other material perforated with aseries of unbroken angular cuts or scores, each cut or score having one portion extended across the general line of the series and another portion extended in the general direction of the series toward the side of the. first portion ol the next cut or score, wh'ereb57 in tearing the line of rupture is directed from one cut or score to another in succession throughout the series.

2. A sheet of paper or other material having a series of unbroken angular outs orscores, each cut or score having one portion extended obliquely across the general line of the series and another portion extended from the end of the first portion in the general direction of the series toward the side of the first portion ot the next cut or score.

3. A sheet of paper or other material having a double series of unbroken angular cuts or scores, each eut or score having one portion extended across the general line of the series and another portion extended in the general direction of the series 'toward the first portion of the next cut or score, and a tongue or tab at the starting end of said double series of cuts or scores.

4. A sheet of paper or other material having a double series of cuts or scores, each cut or score having one portion extended across the general line of the series and another portion extended in the general direction of the series toward the first portion of the next cut or score, and a tongue or tab at the starting end of said double series of cuts or scores, said tongue or tab having its end glued down and having an intermediate double fold.

5. A sheet of paper or other material perforated with aseries of unbroken angular cuts or scores, each cut or score having one portion extended across the general line of the series and at each end of the lrst portion another portion extended in the general direction of the series toward the side of the next cut or score, whereby the paper may be torn in either direction.

6. An envelop or Wrapper having two series of'cuts or scores diverging from a common point, the cuts or scores of each series being oblique to the general direction of the series, and a starting tongue or tab at the point of divergence of the two series.

This specification signed and witnessed this 31st day of March, A. D. 1900.

ARTHUR KLEIN FELDT.

In presence oi"- A. N. JESBERA, L. R. MOORE.

IOO 

